The rhetorical device you would use to create a feeling of unity between yourself and your audience is first-person plural mode of address.
Using the pronoun <em>we </em>will include both yourself and your audience and create a sense of oneness, so to say. You are all united, which makes your readers feel closer to you as the author.
Give more details please.
<span>Not complete or sufficient to understanding fully</span>
Lady Macbeth said King Duncan resembled her father too much and therefore she couldn’t kill him herself.
Wait I’m confused what is the question that you’re asking?